Home / 20,168.40-27,828.32-11,783.28

Finding the Fourth Proportional to 20,168.40, 27,828.32 and 11,783.28

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Solution

The fourth proportional to 20,168.40, 27,828.32 and 11,783.28 is: 16,258.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.40 : 27,828.32 = 11,783.28 : x
  2. Step 2: Convert to fraction form
    20,168.40/27,828.32 = 11,783.28/x
  3. Step 3: Cross multiply
    20,168.40x = 27,828.32 × 11,783.28
  4. Step 4: Simplify right side
    20,168.40x = 327,908,886.49
  5. Step 5: Solve for x
    x = 327,908,886.49/20,168.40
  6. Step 6: Final answer
    x = 16,258.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.